Repositório Institucional da Universidade Estadual da Paraíba
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Laberintos de José Bergamín (Un laberinto de poesía en los laberintos de la Historia)
No full textLa figura del laberinto es una buena puerta de entrada a la obra de José Bergamín. A través del despliegue y análisis de ese motivo, este artículo pretende ser una introducción al pensamiento poético del escritor, el cual opone enormes resistencias al intento de separar de manera tajante poesía, pensamiento e historia. Las diversas tonalidades afectivas del laberinto bergaminiano permitirán mostrar cómo se ha transformado históricamente esta figura en la escritura del autor y cómo a través de ella -y de la huella que imprimirá en su escritura la experiencia del exilio- se acabará revelando la figura de un sujeto que experimenta una extrema dificultad al tratar de enunciarse en un lenguaje que ya no considera suyo. Por último, y a partir de esta situación límite, el artículo se pregunta por la posibilidad de proveer, en tanto que críticos, un mapa de dicho laberinto, un mapa de dicha obra
Microbial and physicochemical parameters associated with Legionella contamination in hot water recirculation systems
No full textHot water recirculation systems (HWRS) in hotels and nursing homes, which are common in countries such as Spain, have been related to outbreaks of legionellosis. To establish the relationships of microbial and physicochemical parameters, especially protozoa, with the occurrence of Legionella in HWRS, 231 samples from hotels and nursing homes were analysed for Legionella, protozoa, heterotrophic plate counts (HPC) at 22 and 37 °C, Pseudomonas, metals, temperature and others. Legionella pneumophila was the dominant species isolated, and 22 % were sg. 1. The sampling method became particularly important in order to define which factors were involved on the occurrence of Legionella. Results showed that the bacteria and the accompanying microbiota were more abundant in the first flush water whose temperature was lower. The bacteria occurred in those samples with high HPC and were inversely correlated with high temperatures. Multivariate regression showed that a concentration above 1× 105CFU/100 mL of HPC at 37 °C, Fe above 0.095 ppm and the presence of protozoa increased significantly the risk of Legionella colonization, while univariant regression showed that the presence of Cu above 0.76 ppm and temperature above 55 °C diminished it. Therefore, to reduce the risk associated with Legionella occurrence in HWRS these parameters should be taken into consideration
Estrategias locales de verificación y fact-checking en Brasil: la Red Nacional de Combate a la Desinformación, COAR Noticias, Colectivo Bereia, Verifica RS y Agência Tatu.<br />
No full textLa desinformación es un fenómeno creciente y cada vez más presente en las sociedades contemporáneas. Las iniciativas de verificación o fact-checking se han convertido en los últimos años en una de las estrategias centrales en la lucha contra la información falsa que se comparte y se viraliza cada vez más. Aunque la mayoría de estas iniciativas tienen su origen en la profesión periodística, convirtiéndose en una especialización profesional más, las estrategias y políticas para combatir la desinformación en contextos locales de la mano de instancias académicas u organizaciones sin ánimo de lucro van en aumento. No obstante, las investigaciones en esta línea son aún escasas y poco profundas. En el presente artículo, examinamos el papel de la Red Nacional de Combate a la Desinformación (RNCD), creada en Brasil en 2019, así como de cuatro de sus iniciativas más destacadas y proactivas: COAR Noticias, Colectivo Bereia, Verifica RS y Agência Tatu. A través de un enfoque cualitativo, se adopta el diseño de estudio de caso, complementado con entrevistas semiestructuradas, para analizar las estrategias de implementación y verificación de estas iniciativas de combate a la desinformación y las especificidades que enfrentan en el contexto local
Exploring the Impact of Industry 4.0 Information Technologies on Supply Chain Responsiveness: A Dynamic Capabilities Theory Perspective
No full textThis study presents a comprehensive review of the current literature on supply chain (SC) responsiveness capabilities enabled by Industry 4.0 (I4.0) technologies, focusing on flexibility and agility as core dimensions. A systematic literature review was conducted using the Web of Science and Scopus databases, identifying 237 studies that addressed SC flexibility and 206 that addressed agility. The findings reveal distinct interrelationships between specific I4.0 technologies and SC responsiveness capabilities, highlighting the need for an integrated perspective beyond isolated technological applications. Drawing on dynamic capabilities theory, this work proposes a novel conceptual framework that systematically maps enabling I4.0 technologies to the sensing, seizing, and transforming processes underpinning SC agility and flexibility. In doing so, the study identifies critical research gaps and offers a structured foundation for future empirical and theoretical developments. The proposed framework enhances understanding of the synergistic potential of I4.0 technologies and supports strategic decision-making in SC digital transformation
The Relationship Between Emotion Regulation and Perceptions of Body Image, Health, and Eating in Food Science College Students
No full textEmotional regulation plays a central role in shaping eating behaviors and body image, though few studies have examined this relationship in students of food sciences. A total of 297 undergraduates from Human Nutrition and Dietetics and Food Science and Technology completed surveys on health, body image, and eating behaviors, along with the Difficulties in Emotion Regulation Scale (DERS). Exploratory factor analysis (EFA) identified four perception dimensions. Pearson correlations and multiple linear regression assessed their relationships with emotional regulation. EFA revealed four factors: (1) health perception, (2) body image and related emotions, (3) weight and diet control, and (4) individual responsibility for diet. No differences emerged by sex or degree. Correlations indicated that three factors were significantly associated with DERS scores, particularly body image and emotions. Multiple regression showed that body image and emotions and weight and diet control significantly predicted emotional regulation, while health perception and individual responsibility were not significant. These findings highlight the role of emotional regulation in shaping perceptions of health and eating, underscoring its relevance in the education of future food professionals. Training food professionals should integrate emotional competencies to support healthier self-perceptions and practice
Constructing boron and oxygen dual coordination in g-C3N4 for robustcatalytic ozonation and iopamidol degradation
No full textIn this study, a series of boron (B) and oxygen (O) dual doped g-C3N4 (BOCNx) composites with different boric acid dopant dosages were successfully synthesized through one-step thermal condensation method. Amongst, BOCN50 exhibited the best catalytic ozonation activity, achieving 97 % of iopamidol (IPM) degradation within 15 min and the highest k value (0.3166 min−1), which was 8 times higher than that of ozonation alone. Multiple characteristic techniques were used to explore the surface properties of BOCNx catalysts and it was found that B and O primarily coordinated in g-C3N4 as the forms of C-O, C = O and B-N bonds. Further investigation in the structure–activity relationship of BOCNx catalyst indicated that the increasing contents of oxygen-containing functional groups and B-N bonds were linearly correlated with the IPM degradation rate. The results of scavenger experiments and ESR analysis demonstrated that the main reactive oxygen species involved were hydroxyl radicals, superoxide radicals, and singlet oxygen (•OH, •O2− and 1O2). Additionally, up to 12 intermediate products of IPM during the reaction were detected, and the corresponding degradation pathways were elucidated. Finally, the structure of BOCN and the active sites for O3 adsorption were determined by density functional theory (DFT) calculation, thus providing theoretical support for studying the mechanism of catalytic ozonation degradation
Nucleotide sequence of a rice cDNA encoding a transkelotase-like protein homologous to the Arabidopsis CLA1gene product (Accession No. AF024512) (PGR 97-169)
No full textThe Arabidopsis gene CLA1 is required for normal chloroplast development. Disruption of this gene has a recessive pleiotropic effect consisting on arrest of chloroplast development at an early stage, reduction of the expression of several photosynthetic genes, and absence of accumulation of photosynthetic pigments. Database searches show that the protein encoded by the CLA 1gene is highly conserved in evolution. We report the sequencing of a cDNA clone from rice that is homologous to the Arabidopsis CLA1. This is the first homolog of CLA1 characterized in monocot plants. The cDNA is 1785 basepairs in length. It contains an open reading frame (ORF) coding for 594 amino acids. The TPP binding sequence of the Arabidopsis CLA1 (residues 217 to 247) is well conserved in the rice homolog. The product of the CLA1 gene has significant similarity to transketolases and other enzymes that require thiamin pyrophosphate (TPP) as cofactor, suggesting an enzymatic function for this protein. It could may have a novel catalytic activity necessary for chloroplast development
Impact of expanded collaboration in the practicum
No full textEl artículo presenta una investigación dirigida a mejorar el prácticum del Grado de Maestro/a de Educación Primaria a través de la creación de “espacios tutores expandidos”, equipos formativos colaborativos constituidos por las maestras que tutorizan a los diversos estudiantes de prácticas de una misma escuela y su tutora de la universidad. Participaron en la investigación 6 escuelas, 14 tutoras de escuela y 3 de universidad. Se registraron los “espacios tutores expandidos” y se realizaron entrevistas de valoración con las tutoras, que se analizaron, respectivamente, mediante análisis de la interactividad y análisis de contenido. Se identificaron distintas concreciones de los “espacios tutores expandidos”, adaptadas a las condiciones de cada escuela. Dos factores resultaron clave para mejorar el prácticum a partir de estos espacios: el apoyo mutuo entre las maestras que los espacios promueven, y la implicación de las coordinadoras de prácticas de las escuelas en cómo se llevan a cabo
Validity and reliability of the Spanish version of the Dental Impact on Daily Living (Sp-DIDL) questionnaire in a Spanish population: a cross-sectional study.
No full textBACKGROUND: Oral health has an impact on the patient's quality of life. This study aimed to translate, culturally adapt, and comprehensively validate the Dental Impact on Daily Living (DIDL) index for use among Spanish-speaking adults, encompassing the assessment of its reliability and construct validity. A secondary aim was to correlate the Sp-DIDL with demographic data, caries, periodontal attachment loss, and the use of prosthesis.METHODS: The original DIDL was translated and adapted into Spanish following international guidelines. A pilot test was done with 20 patients to assess comprehension and validity. Psychometric properties were evaluated in a cross-sectional study using a convenience sample of 125 adults (mean age 49.3 years) recruited from the Dental Hospital of the University of Barcelona. Internal consistency was analysed with Cronbach's alpha. Intraclass Correlation Coefficient (ICC) was used to assess the test-retest reliability of the clinical measures (DMF index and periodontal attachment loss). Confirmatory Factor Analysis (CFA) and Known-Groups Validity were used to evaluate construct validity. The associations with demographic data, the Decayed-Missing-Filled (DMF) index, periodontal loss, and the use of prosthesis were assessed using one-way ANOVA, Student t-tests, Pearson's correlation, and multiple linear regression analysis.RESULTS: The final version of the Sp-DIDL was approved after testing on 20 patients (Cronbach's α = 0.919). In the validation stage, all Cronbach α values were > 0.90, indicating excellent internal consistency. The 5 factors had an explained variance over 0.40 (0.51 to 0.78). The mean DIDL score was - 1.08 (standard deviation (SD) = 1.82). Overall, the Sp-DIDL score showed a negative correlation with age (r = -0.535, p < 0.001) but was not associated with gender (p = 0.235). Patients with elementary studies or less had lower Sp-DIDL scores (p < 0.05). DMF was negatively correlated with Sp-DIDL (r = -0.318; p < 0.001). Patients with dental prostheses had lower Sp-DIDL scores (p < 0.05). The multiple lineal regression model only included age as a predictor of Sp-DIDL score (B = -0.049; p < 0.001).CONCLUSIONS: The DIDL questionnaire was validated in a Spanish population. This Spanish version of the DIDL proved valid and reliable for measuring the impact of oral health on patient quality of life. The Sp-DIDL was negatively correlated with age: the older the patient, the greater the impact of oral health status upon quality of life
